7. OPERATING LEASES

12 Months Ended

Dec. 31, 2015

Leases, Operating [Abstract]

Operating Leases of Lessee Disclosure [Table Text Block]

7. OPERATING LEASES

We lease certain machinery, trucks, and facilities under operating leases that generally provide for renewal options. We incurred approximately $1,335,000, $1,324,000 and $840,000 in rent expense under operating lease arrangements for 2015, 2014 and 2013, respectively.

Future minimum lease payments under non-cancelable operating leases are approximately as follows for the years ended December 31:

2016	$	1,205,000
2017		1,129,000
2018		620,000
2019		110,143
2020		-
Total	$	3,064,143